<?php

/**
 * Form Authentication adapter for AuthComponent.
 *
 * PHP versions 5
 * CAKEPHP versions 2.x
 * 
 * Green CMS - Content Management System and Framework Powerfull by Cakephp
 * Copyright 2012, GREEN GLOBAL CO., LTD (toancauxanh.vn)
 * 
 * CakePHP(tm) :  Rapid Development Framework (http://www.cakephp.org)
 * Copyright 2005-2011, Cake Software Foundation, Inc. (http://www.cakefoundation.org)
 *
 * Licensed under The MIT License
 * Redistributions of files must retain the above copyright notice.
 *
 * @author        Technology Lab No.I <tech1@toancauxanh.vn>
 * @link          
 * @package       Controller.Component.Auth
 * @since         Green v 1.0
 * @license       MIT License (http://www.opensource.org/licenses/mit-license.php)
 */
App::uses('BaseAuthenticate', 'Controller/Component/Auth');

/**
 * An authentication adapter for AuthComponent.  Provides the ability to authenticate using POST
 * data.  Can be used by configuring AuthComponent to use it via the AuthComponent::$authenticate setting.
 *
 * {{{
 * 	$this->Auth->authenticate = array(
 * 		'Form' => array(
 * 			'scope' => array('User.active' => 1)
 * 		)
 * 	)
 * }}}
 *
 * When configuring FormAuthenticate you can pass in settings to which fields, model and additional conditions
 * are used. See FormAuthenticate::$settings for more information.
 *
 */
class FormAuthenticate extends BaseAuthenticate {

    /**
     * Authenticates the identity contained in a request.  Will use the `settings.userModel`, and `settings.fields`
     * to find POST data that is used to find a matching record in the `settings.userModel`.  Will return false if
     * there is no post data, either username or password is missing, of if the scope conditions have not been met.
     *
     * @param CakeRequest $request The request that contains login information.
     * @param CakeResponse $response Unused response object.
     * @return mixed.  False on login failure.  An array of User data on success.
     */
    public function authenticate(CakeRequest $request, CakeResponse $response) {
        $Model = ClassRegistry::init($this->settings['userModel']);

        $fields = $this->settings['fields'];
        if (empty($request->data[$Model->alias])) {
            return false;
        }
        if (
                empty($request->data[$Model->alias][$fields['username']]) ||
                empty($request->data[$Model->alias][$fields['password']])
        ) {
            return false;
        }
        return $this->_findUser(
                        $request->data[$Model->alias][$fields['username']], $request->data[$Model->alias][$fields['password']]
        );
    }

}
